I need a simple, not powerfull, linear engine.
It has to move just like an inch back and forth, chaning directions on its own when it reached the end of his stroke.
Even 5mm would be enough movement.
I think about of something based on a neodymium magnet in cylinder shape.
It has to be as simple as possible, i don't need any control for frequenzi, because if it works.. i can work out more from there on my own.
Only thing important, it has to be small, like the lenght of a half pencil and 2cm in diameter would be ok (for the moving part, electronics placed elsewhere don't matter).
A normal rotating engine with a shaft doesn't work for the design i have in mind :(
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